Hello,

I am just trying to make a 16F877 do anything. Blink LEDs for all I
care, but I am having no luck...

Here is the code...

;====== XMTR.ASM ======================================== 2/08/02 ======
        list    p=16f877
        radix   hex

;-----= CPU EQUATES =---------------------------------------------------
tmr0    equ     0x01
status  equ     0x03
porta   equ     0x05
portb   equ     0x06
portc   equ     0x07
portd   equ     0x08
porte   equ     0x09
pclath  equ     0x0a
intcon  equ     0x0b
trisa   equ     0x85
trisb   equ     0x86
trisc   equ     0x87
trisd   equ     0x88
trise   equ     0x89
adcon1  equ     0x9f
rp0     equ     5
rp1     equ     6

;-----= BIT EQUATES & VARIABLES =---------------------------------------

;-----= PROGRAM =-------------------------------------------------------
        org     0x000
;
        bcf     status, rp0
        bcf     status, rp1
;
        bsf     status, rp0
        movlw   b'00000111'
        movwf   adcon1
;
        movlw   b'00000000'
        movwf   trisb
;
        bcf     status, rp0
;
start   nop
        clrf    portb

loop    incf    portb, f
        nop
        nop
        nop
        nop
        goto    loop

        end


      VCC
      ---
       |
       /
       \
       /
       \
       |
      ---
      \ /
       V
      ---
       |
    ==PORT==

As simple as that. I have it set to RC with a 10k and .1uF.  On a scope
RB 0-3 is changing but RB 4-7 isn't doing a thing, and when I connect an
LED like in the diagram the PIC stops oscillating.  What are the correct
settings for the FUSES?

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